Best uses of accelerometers in Android?

For me its Homerun Battle 3d. I usually don't like tilt controls but for that game its perfect. They did a great job with it.
 
Speedx 3D - race down a sick tunnel\tube avoiding obstacles
Hyperspace - move a marble around obstacles on a 3D checkerboard
Bubble level- it's a digital level program
 
I love Asphalt's use of it to steer, that is awesome, I would love a Pac Man game that used the accelerometer. Defender-like game too, that sort of thing.